Best open-source alternatives to Microsoft 365

TinyCld is a self-hosted workspace platform designed as an app shell around a set of installable feature packages. It combines an Expo Router front end with a PocketBase back end, and the repository described here provides the runnable shell, deployment configuration, package generation, and runtime wiring needed to assemble a workspace from sibling packages. It is aimed at users who want a self-hosted alternative to a cloud workspace suite and at developers who want to extend that suite with modular packages. The README explains how to clone the workspace members, install from the workspace root, run the development proxy and backend processes, and build or deploy the bundled container image. Features called out include mail, calendar, contacts, drive, text, calc, and Google Takeout import, with additional packages able to be added by workspace linking.